html,
body {
	width: 100%;
	height: 100%;
	display: flex;
	display: -webkit-flex;
	flex-direction: column;
	-webkit-flex-direction: column;
	margin: 0;
	padding: 0;
	font-family: "微软雅黑";
	z-index: 1;
}


/*标题*/

header {
	background-color: #18B4ED;
	position: relative;
	height: 4rem;
}

header h2 {
	color: #fff;
	text-align: center;
	height: 4rem;
	line-height: 3rem;
	margin-top: 5px;
	margin-bottom: 5px;
}

/*主体*/

.container {
	background-color: #F2F2F2;
	flex: 1;
}


/*输入框*/

.search {
	background-color: #F7F7F8;
	display: flex;
	display: -webkit-flex;
	align-items: center;
	height: 4.5rem;
	padding: 0.5rem;
}

.search-input {
	width: 100%;
	border: 0;
	height: 4rem;
	padding-left: 1rem;
	font-size: 22px;
}


/*主体部分*/

.main {
	flex-grow: 1;
	display: flex;
	display: -webkit-flex;
	flex-direction: row;
	-webkit-flex-direction:row;

	align-items:center; 
	-webkit-align-items:center; 
	justify-content:center ; 
	padding-top: 0.5rem;
}

.main_box{
	display: flex;
	display: -webkit-flex;
	flex-direction: column;
	-webkit-flex-direction:column;
	flex-grow: 1;
}

.btn_sm{
	background-color: #0AB4F0;
	color: #fff;
	border: 0;
	height: 5rem;
	margin: 0.25rem;
}

footer{
	background-color: #fff;
	height: 6rem;
}
.footer_text{
	text-align: center;
	line-height: 6rem;
	margin: 0;
}